My first primes lens was the nifty fifty (50mm 1.8 . I absolutely loved it. My next lenses had to be the 85mm 1.8 lens. I read the reviews and decided to get it. Wow! This lens is so sharp and focuses very accurate and quickly. Now given... my 50mm 1.8 is very impressive, but this 85mm 1.8 takes the cake for me. My portraits have a smooth and creamy back ground at 1.8 and it's tack sharp. This lens was well worth the investment for me. GeneralJump to... BrandCanonMPN2519A003Lens SeriesCanon EFColorBlackLens TypeTelephotoLens MountCanon EOSFormat CompatibilityFull Frame FocusJump to... Focus TypeAuto FocusFocusing TechnologyN/AClosest Focus Distance33.6" / 85cmDistance InformationN/ABuilt-In MotorN/A OpticsJump to... Focal Length85mmAngle Of View28 deg.35mm Equivalent Focal LengthNot ApplicableCoverageN/AMinimum Aperturef/22Maximum Aperturef/1.8Maximum Magnification0.29xLens CoatingN/AAspherical ElementsN/AED Glass ElementsN/AFilter Size58mm ConstructionJump to... Lens Elements / Groups9 Elements / 7 GroupsDiaphragm BladesN/ADimensions3.0 x 2.8" (75 x 71.5mm)Weight15oz / 425g FeaturesJump to... Image Stabilization TypeNoneTripod CollarYesWaterproof / Water ResistantN/ADust ResistantN/A